1941results about "Steam generation plants" patented technology

The invention provides a power plant steam extraction energy storage and power generation optimization method and system based on fused salt heat storage, and relates to the technical field of electric power. The extracted steam is introduced into a multi-stage tandem type steam-molten salt heat exchanger group; when the load of the power grid is higher than a preset dynamic threshold value, conveying the high-temperature fused salt to the cascade fused salt-water heat exchanger group by adopting a multi-path parallel fused salt conveying system; in the fused salt-water heat exchanger group, a structure of combining countercurrent flow heat exchange and a spiral heat exchange pipe is adopted, so that the heat exchange efficiency is improved, and superheated steam is generated; the generated high-temperature and high-pressure steam is conveyed to the improved steam turbine with the variable air inlet area, the air inlet area is dynamically adjusted according to the power grid load requirement, and the efficiency of the steam turbine is optimized; the intelligent power grid technology and the demand side response strategy are utilized to realize bidirectional interaction between the power generation end and the power utilization end, and power supply and demand are dynamically balanced.

The invention discloses a coal-fired power generation steam and heat pump integrated energy storage system and an operation method thereof. The system comprises a coal-fired unit coupling fused salt energy release system and a reheat steam coupling heat pump energy storage system. In the low ebb of electricity utilization, the coal-fired unit outputs electric energy to drive the heat pump charging compressor to compress a heat pump working medium, then the heat pump working medium heats the fused salt, meanwhile, part of reheat steam of the coal-fired unit sequentially heats the fused salt and a working medium at an outlet of the heat pump charging expansion machine, and the load is further reduced; and finally, redundant electric energy and part of heat energy of the reheated steam are converted into fused salt heat energy to be stored. In the peak period of electricity utilization, a part of exhaust steam of the high-pressure cylinder is heated through heat stored in the fused salt storage tank to generate reheated steam, the heat absorption capacity of main steam entering the boiler is increased under the condition that the coal consumption of the boiler is not changed, the flow of the main steam is also increased, and then the output load of the coal-fired unit is increased. According to the method, the peak regulation potential of the coal-fired unit can be exerted, the output load interval of the unit is expanded, and the method is effective for improving the peak regulation capacity of the coal-fired unit and stabilizing power grid fluctuation.

The invention provides a power plant deep peak regulation and power generation optimization method and system based on steam extraction energy storage, and relates to the technical field of power grids, the method comprises the steps that high-temperature and high-pressure steam is generated through a steam turbine, the steam enters a steam extraction system, and the steam extraction system is used for extracting part of steam exhausted by the steam turbine when the load of the power grid is low; the extracted steam is conveyed into the energy storage device to be stored; based on historical power grid load data and real-time load prediction data, dynamic optimization adjustment of generated power is carried out by combining characteristics of a generator set of a power plant, and deep peak regulation operation of the generator set in a low-load operation state is realized by controlling a power generation dispatching control module of the power plant. The output power of each unit is adjusted through an optimization algorithm; when the load of the power grid is low, part of steam of the steam turbine is stored in the energy storage device through the steam extraction system, and when the load of the power grid is peak, the stored steam flows back to the steam turbine again to be reused.

The invention discloses an energy storage-heat pump linkage heat, power and cold collaborative peak regulation system and an operation method. The system comprises a combined heat and power generation unit, an evaporator, a condenser, a compressor, wind power and photovoltaic power generation equipment, an electric power controller, a cross-seasonal energy storage chamber and the like. Surplus electric quantity of a power grid is consumed through a heat pump and converted into heat energy and cold energy in a power off-peak period, and part of condensed water of a steam turbine is heated through heat storage in a power peak period to improve the power output of a unit; the unit heats heating return water through heat storage release and steam turbine steam extraction in a cascade mode in winter, electric heating peak regulation is achieved, external cooling and electric cooling peak regulation are achieved through electric cooling conversion and cold energy release in summer, and cross-seasonal energy storage and peak regulation are achieved through electric heating and cold conversion in spring and autumn. Power storage is replaced by cold storage and heat storage, peak regulation is promoted through heat supply and cold supply, and the new energy power consumption level can be greatly improved.

According to the energy storage coupling heat pump steam generation method and system, the mode that the heat pump device and the energy storage device cooperatively operate is adopted, and efficient and economical steam supply is achieved. The method comprises the steps that high-temperature water is prepared and stored in the off-peak electricity period through the heat pump device, and the high-temperature water is further heated through the energy storage device to generate superheated steam for a user to use. The energy storage device comprises a plurality of energy storage modules, and a heat exchange pipeline of the energy storage device can be switched between a parallel connection mode and a series connection mode through switching, so that deep heat release and flexible regulation and control are achieved. According to the method, the energy storage capacity and heat release power of the energy storage module are dynamically adjusted, enthalpy increment distribution of the heat pump and the energy storage device is optimized in combination with load prediction, and diversified steam requirements are met. And meanwhile, preheating or dynamic supplement is conducted on the energy storage module through the heat pump device, waste heat recovery is achieved, and the energy efficiency is improved. According to the method, the operation cost is remarkably reduced, the capacity of the system for adapting to load fluctuation is enhanced, and the method is suitable for industrial steam use scenes and has the advantages of being efficient, stable and flexible.

The invention discloses a two-phase cold plate liquid cooling ORC waste heat recovery and photovoltaic cooperative energy supply system and method, and relates to the technical field of energy management and waste heat utilization. The two-phase cold plate liquid cooling ORC waste heat recovery and photovoltaic cooperative energy supply system and method comprises the following steps that S1, thermal parameters and electric power states related to cooperative energy supply are collected, and a thermoelectric cooperative input data set is constructed and preprocessed; s2, the supply and demand difference of the high-temperature steam in the main condensation branch and the ORC branch is recognized; s3, coordinating a photovoltaic power supply structure and a cooperative energy supply sequence, and judging the matching degree of cooperative energy supply to a load; and S4, evaluating a cooling, heating and power cooperation and double-source coupling state in combination with a load matching condition and an output behavior. The problems that in an existing two-phase cold plate liquid cooling structure, high-temperature steam is not recycled, photovoltaic power generation does not participate in linkage energy supply, the power source is single, waste heat waste is serious, and energy collaboration is insufficient are solved.

The invention discloses a thermal power generating unit operation state detection method and system, and relates to the technical field of operation state detection, and the method comprises the steps: S100, building a working condition variable label; s200, carrying out statistics on correlation coefficients of sensors and faults under various working conditions in historical operation data of the thermal power generating unit, dynamically updating weights, and storing the weights in a working condition database; s300, based on the energy transfer chain of the thermal power generating unit, establishing a parameter incidence matrix between devices; according to the method, the data weights of different sensors are adaptively adjusted according to the real-time operation state of the equipment, the defect that the traditional multi-sensor fusion adopts fixed weight or simple weighted average and is difficult to adapt to the working condition change is overcome, a physical relationship network between the equipment is constructed, key associated parameters are identified in an energy transfer form, and the fault identification accuracy is improved. The robustness of anomaly monitoring under complex working conditions is improved, and the false alarm rate is reduced.

The invention provides a comprehensive early warning control method and device suitable for a steam-fused salt heat storage system. The method comprises the steps that the temperature value of a mixed mother pipe temperature arrangement temperature field of a fused salt side outlet of a steam-fused salt heater is obtained so that fused salt can be guided to a fused salt tank; acquiring a temperature value of a molten salt side outlet temperature arrangement temperature field to trigger an associated protection action; according to the real-time temperature data of the fused salt circulation process temperature field, an electric heat tracing device at the corresponding position is started for preheating and condensation prevention; temperature values of the inner wall of the molten salt tank and a molten salt medium in the molten salt tank are obtained to carry out molten salt tank thermal stress early warning; obtaining the temperature value of the temperature of ceramsite at the bottom of the molten salt tank to judge whether the molten salt leaks or not; and the temperature value of the molten salt tank bottom basic temperature is obtained for ventilation control. Based on temperature monitoring and condition analysis, gradient early warning of the safety working condition of the fused salt side of the steam-fused salt heat storage system is effectively achieved, corresponding protection operation can be correspondingly implemented, and safety and stability of the fused salt system can be effectively prevented and guaranteed.

The utility model relates to the field of energy recovery, in particular to a waste energy recovery device for biogas power generation in a waste incineration power generation project. The utility model provides a waste energy recovery device for biogas power generation of a waste incineration power generation project, which can be used for recovering waste heat in waste gas generated by waste incineration power generation and biogas power generation and improving the energy utilization efficiency. A waste energy recovery device for biogas power generation in a waste incineration power generation project comprises a first connecting pipe, a first connecting hollow pipe and the like, and the rear side of the first connecting pipe is connected with the first connecting hollow pipe. After waste gas flows into the connecting heat conduction pipe, water in the first water tank is heated, hot water can be discharged for use through the water discharging pipe, and water vapor generated in the water heating process can flow into the steam generator from the steam pipe to generate electricity. The effects that waste heat in waste gas generated by waste incineration power generation and biogas power generation can be recycled, and the energy utilization efficiency is improved are achieved.

Disclosed is a marine fuel cell-based integrated heat, electricity, and cooling supply system comprising a power supply system and a waste heat recovery system; the power supply system comprises wind turbine generator sets, solar generator sets, and a fuel cell power module; the waste heat recovery system encompasses a turbine power generation module and a lithium bromide refrigeration module; the fuel cell power module is connected to both the turbine power generation module and the lithium bromide refrigeration module; the turbine power generation module is used to generate electricity using waste heat. This approach fully exploits the waste heat from the exhaust gas generated by the fuel cell power module, resulting in a high overall energy utilization rate. The self-consumption electricity and pure hydrogen fuel for the integrated energy supply system can be obtained from solar and wind energy, ensuring low carbon emissions for the entire system.

The utility model discloses cooking equipment, which comprises a cooking device, a heating device and a control device, the gas steaming and baking module is connected with the cooking device and used for supplying steam and / or smoke to the cooking cavity, the gas steaming and baking module comprises a combustor, the combustor comprises a body and a gas supply structure, the body defines a combustion cavity, the gas supply structure defines a gas mixing cavity communicated with the combustion cavity, and the gas supply structure is provided with a gas inlet, an air inlet and an outlet; the gas inlet communicates with the gas mixing cavity, the air inlet communicates with the gas mixing cavity, the gas mixing cavity communicates with the combustion cavity through the outlet, and the combustion cavity is suitable for introducing gas in the gas mixing cavity. According to the cooking equipment provided by the embodiment of the utility model, the gas supply structure with the gas mixing cavity is arranged on the combustor, and the gas mixing cavity is communicated with the combustion cavity of the combustor, so that the premixing of the gas and the air can be realized, the sufficient mixing of the gas and the air can be ensured, and the sufficient combustion of the gas can be ensured.

The invention discloses a square battery case airtightness detection device and method.The square battery case airtightness detection device comprises a workbench, a detection table arranged on the workbench, an air inlet assembly and a longitudinal contraction mechanism, the detection table comprises a base, a synchronous moving mechanism and two sealing covers, the base is located above the workbench, and the synchronous moving mechanism is located above the workbench; the base and the two sealing covers are all made of glass materials, a battery shell is suitable for being placed in the base, and the synchronous moving mechanism is connected with the two sealing covers and the base so as to be suitable for driving the two sealing covers to move oppositely to be in butt joint and wrap the battery shell; a cavity is formed among the battery shell, the sealing covers and the base, a square air inlet cavity is formed after the two sealing covers are in butt joint, the square air inlet cavity is communicated with an opening of the battery shell, steam is introduced into the battery shell after the battery shell is covered with a glass material, and the steam is sprayed on glass through an air leakage point to form a mist point so that accurate positioning can be achieved.

The invention provides a green low-carbon biomass coupling fused salt energy storage methanol preparation system, and belongs to the field of methanol preparation systems. The problem that methanol purge gas is released and residual biomass gas is generated and needs to be treated in the process of preparing methanol through biomass gasification is solved. One part of new energy electricity is used for electrolyzing water, the other part of new energy electricity serves as abandoned electricity to enter a fused salt electric heater, hydrogen generated by electrolyzing water enters a catalytic synthesis tower, oxygen is used for biomass gasification, generated carbon monoxide, hydrogen and carbon dioxide enter the catalytic synthesis tower, and methanol is synthesized in the catalytic synthesis tower. Biomass, redundant biomass gas and formaldehyde purge gas enter the high-temperature and high-pressure biomass fluidized bed boiler, then superheated steam generated by the high-temperature and high-pressure biomass fluidized bed boiler and part of steam serve as a catalytic temperature heat source for methanol production, the remaining steam enters the power generation system to be used for power generation, and stable power supply of the whole system is guaranteed. And the generated high-temperature and high-pressure steam is used for power generation to improve the unit efficiency.

The utility model discloses a flash evaporation compression waste heat recovery system suitable for industrial waste liquid, belongs to the technical field of waste heat recovery of industrial waste liquid, and particularly relates to waste heat recovery from a waste water heat source with a high-pollution medium. The problem that in the prior art, in the field of industrial waste liquid waste heat, especially in the field of waste heat recovery of water for heat compensation of heating return water or process water, a reasonable waste heat recovery and waste water recycling mode is lacked so that consumption of energy, water resources and operation cost can be reduced is solved. The system comprises a flash tank; a flash evaporation steam outlet of the flash evaporation tank is communicated with a gas inlet of the compressor through a flash evaporation steam pipe; and a gas outlet of the compressor is communicated with a steam inlet of the spray tower. The flash evaporation compression waste heat recovery system suitable for the industrial waste liquid is suitable for recovering waste heat of the industrial waste liquid.

The utility model provides a flexible peak shaving system for a fused salt energy storage coupling thermal power generating unit. The flexible peak shaving system comprises a thermal power generation system, a fused salt heat absorption unit, a fused salt storage unit and a fused salt heat release unit. In the peak regulation stage of the thermal power generating unit, the fused salt heat absorption unit operates, part of main steam is extracted to serve as a heat source and exchanges heat with fused salt to achieve fused salt heat absorption, meanwhile, the fused salt heat release unit operates, a first steam return pipe is opened and used for supplementing boiler reheat steam, the problem of boiler cold overtemperature during fused salt energy storage is solved, and the system can operate smoothly and safely. When the thermal power generating unit operates at the peak, the fused salt heat release unit operates, the fused salt heat absorption unit does not operate, the first steam return pipe is closed, high-temperature fused salt heats supplied water shunted by the water supply unit to generate steam, and the steam converges to a main steam pipeline and / or a reheat steam pipeline through a pipeline and / or exchanges heat with condensate water of the water supply unit through the pipeline. And the molten salt heat release process is realized.

The invention discloses a combined heat and power system and method for coupling thermochemical energy storage. According to the technical scheme, the combined heat and power system coupled with thermochemical energy storage comprises a thermochemical energy storage device, a compressed air energy storage device, a waste heat boiler and a steam turbine power generation device. In a low ebb of electricity utilization, heat storage is performed on the thermochemical energy storage device by adopting electric energy, and gas exhausted by the thermochemical storage tank is further stored by adopting a compressed air energy storage device; in the power utilization peak or peak, the compressed air energy storage device is started to release energy, the thermochemical energy storage device is started to release heat to the outside, high-temperature gas exhausted through heat release reaction is supplied to the waste heat boiler, steam generated by the waste heat boiler drives the steam turbine power generation device to generate power, and exhausted steam is used for supplying heat to the outside to achieve cogeneration. Thermochemical energy storage, compressed air energy storage, the waste heat boiler and steam turbine power generation are coupled for application, and the energy utilization efficiency of the thermochemical energy storage system is effectively improved.

The invention belongs to the technical field of thermal power generation, and relates to a thermal power plant steam turbine dead steam heat exchange device which comprises a boiler, and a dead steam treatment mechanism is mounted on one side of the boiler. The boiler generates high-temperature and high-pressure steam to drive the steam turbine to rotate, heat energy is converted into mechanical energy, the mechanical energy is transmitted to the generator through a coupler, a generator rotor rotates in a magnetic field, electric energy is generated through electromagnetic induction, dead steam generated by the steam turbine is distributed to the heat exchange assembly through a gas conveying pipe, and heat energy is recycled through primary and deep heat exchange and then cooled. And during the period, the water pump is used for assisting water drainage, the smooth proceeding of the water drainage process is ensured, and the condensed water can enter the boiler again to be recycled after being treated, or other treatments are carried out according to actual needs.

The invention belongs to the field of coupling power generation, and provides a coupling pulverized coal fired boiler low-load stable combustion and blending combustion system and a control method. According to the system, cold air from a boiler primary air fan is divided into two paths, one path is directly conveyed to a cold air main pipe, and the other path is conveyed to a hot air main pipe after being preheated by a preheater; the coal mill correspondingly takes cold air and hot air from the cold air mother pipe and the hot air mother pipe, the cold air and the hot air are mixed to a set temperature and then enter the coal mill for pulverized coal drying, and the dried pulverized coal is conveyed to the pulverized coal boiler to enter a hearth for combustion; the biomass gasification furnace takes cold air and hot air from the cold air mother pipe and the hot air mother pipe correspondingly, and the cold air and the hot air enter the biomass gasification furnace after being mixed to a set temperature; the biomass material is gasified in the biomass gasification furnace to generate carbonized products, namely biomass charcoal and biogas; the carbonized product biomass charcoal is conveyed to a coal mill to be milled together with the raw coal, and then is blown to a pulverized coal boiler to enter a hearth for combustion; biogas directly enters the pulverized coal boiler and enters a hearth for combustion.

The utility model discloses a wind-driven vortex refrigeration seawater desalination device which comprises a wind-driven system, a vortex tube refrigeration system and a seawater desalination system, the vortex tube refrigerating system comprises an air compressor and a vortex tube; the air compressor is respectively connected with the wind power driving system and the vortex tube; the seawater desalination system comprises a double-pipe heat exchanger, a box body and an air pipe, a water baffle, a heating pipe and a sprayer are arranged in the box body, a fan is arranged in the air pipe, the cold and hot pipe ends of the vortex pipe are respectively connected with the air pipe and the double-pipe heat exchanger, the double-pipe heat exchanger is connected with the heating pipe through a first water pump, and the heating pipe is connected with the double-pipe heat exchanger; an air outlet of the box body is connected with the air pipe, the box body is connected with the sprayer through the second water pump, and the condensate valve is connected with the air pipe. The seawater desalination device is simple and compact in structure, low in manufacturing cost and high in seawater desalination efficiency, the seawater desalination cost is greatly reduced, the quality of fresh water is ensured, and the energy utilization rate is improved.

The invention provides an energy gradient utilization steam Rankine cycle power generation system and method for nuclear fusion, and belongs to the field of nuclear fusion energy conversion and utilization. Different temperature heat of a cladding, a divertor and a vacuum chamber is guided into a high-temperature independent heat storage loop, a medium-temperature independent heat storage loop and a low-temperature independent heat storage loop respectively, an operation section stores heat, and a pause section releases heat; feed water is heated step by step through a multi-stage preheater, an evaporator and a superheater according to the sequence of low temperature, medium temperature and high temperature, and superheated steam of 550 DEG C is formed to continuously drive a turbine to generate power. Decoupling of intermittent output of the fusion reactor and continuous operation of the power generation system is achieved, steam extraction of a steam turbine is omitted, the structure is simplified, and the energy utilization rate and the circulation efficiency are improved.

The invention discloses a gas turbine air inlet temperature coordinated regulation and control system based on waste heat multi-stage utilization and an operation method, and relates to the technical field of combined cycle unit energy conservation, the system comprises a waste heat recovery module, an air inlet temperature regulation and control module, an energy conversion module and a control module; high-temperature exhaust smoke of the waste heat boiler is used as a heat source to heat a flue gas heat exchanger at the tail of the waste heat boiler of the combined cycle unit to generate hot water, and the hot water is used for directly heating inlet air of a gas turbine, driving an absorption heat pump to generate cold water to cool the inlet air of the gas turbine or driving an organic Rankine cycle module to generate power to be connected into auxiliary power, so that multipurpose utilization of waste heat of the unit is realized; in addition, the invention provides an operation method for synergistically improving the efficiency of the system and the combined cycle unit, the wide-load operation capacity and the partial-load energy utilization capacity of the unit can be effectively improved, meanwhile, the waste heat recovery capacity under the high-temperature condition is guaranteed, and the energy consumption efficiency of the unit is comprehensively improved.

The invention relates to the technical field of garbage treatment, in particular to a garbage low-carbon coupling treatment system and method.The method comprises the following steps that large wet materials and organic waste residues are separated from kitchen garbage, and the large wet materials are dried and put into a garbage incinerator to be combusted to release heat; fermenting the organic waste residues to obtain biogas which is used for burning and heating methanol liquid to generate methanol steam, mixing the methanol steam with water vapor, and performing catalytic hydrogen production to obtain mixed gas; the sludge is dried, a part of the dried sludge is put into a biomass gasifier to be subjected to coupled gasification with biomass waste to generate biomass gas, and the rest of the dried sludge is put into a garbage incinerator to be combusted together; and the mixed gas obtained through catalytic hydrogen production is separated, hydrogen and other combustible gas are obtained, and the biomass gas and the other combustible gas are fed into a garbage incinerator to be combusted together. According to the scheme, kitchen waste, sludge and biomass waste can be subjected to coupling treatment, and hydrogen is prepared.

The invention relates to an energy system and a control method thereof. The energy system comprises a power generation system and an energy storage and release system, the power generation system comprises an evaporator, a turbine, a condenser and a circulating pump which are sequentially and circularly communicated to form a power generation channel, the circulating pump is used for driving a circulating working medium to circularly flow in the power generation channel, and the evaporator can vaporize the flowing circulating working medium through surface layer warm water in a water area; the turbine can drive the generator to rotate to generate electric energy under the action of the vaporized circulating working medium, and the condenser can liquefy the circulating working medium flowing through the condenser through deep cold water in a water area. The energy storage and release system comprises a gas storage device, an energy storage unit and an energy release unit, the energy storage unit and the energy release unit communicate with the gas storage device, the energy storage and release system has an energy storage mode and an energy release mode, and in the energy storage mode, the energy storage unit and the evaporator can jointly vaporize the cycle working medium; and in the energy release mode, the energy release unit and the condenser can jointly liquefy the cycle fluid. According to the energy system, the energy conversion efficiency can be effectively improved.

The invention discloses an energy system and method for coupling calcium-based thermochemical heat storage and carbon capture. The energy system comprises a calcination unit, a carbon dioxide pretreatment storage unit, a calcium oxide heat exchange storage unit, a carbonation reaction unit and a heat utilization unit which are arranged based on a boiler. The calcining unit takes green valley electricity as energy to drive calcining reaction to realize heat storage, and generated CaO is processed by the calcium oxide heat exchange storage unit and then is stored for use in a heat release stage; generated COs are stored for standby application after passing through the carbon dioxide pretreatment storage unit; in the heat release stage, CaO and the desulfurized flue gas are subjected to heat release carbonation reaction in the carbonation reaction unit, and heat is released; caCO3 generated by the carbonation reaction can be used for the next heat storage stage; and the heat released by the carbonation reaction is conveyed to the heat utilization unit for heat exchange. Through coupling of calcium-based thermochemical heat storage and carbon capture, green electricity and off-peak electricity are fully utilized, and efficient storage and gradient utilization of energy are achieved.

The invention relates to the technical field of waste heat recovery equipment, in particular to a sintering rotary furnace waste heat composite recovery structure which comprises a rotary furnace body, a boiler body, an energy saver and a flue gas treatment device. The two ends of the economizer are connected with a boiler body flue and the flue gas treatment device respectively, the flue gas treatment device comprises a compression cavity, a piston, a driving device, a water outlet, an exhaust port, a vortex tube and a recovery cavity, the compression cavity is communicated with the economizer through a throat pipe, the piston is located in the compression cavity and forms a moving pair with the compression cavity, and the driving device can drive the piston to move. The water outlet and the exhaust port are communicated with the compression cavity, the recovery cavity surrounds the outside of the compression cavity and is communicated with the hot air outlet of the vortex tube, four-time waste heat recovery is achieved through mutual cooperation of all the components, and the waste heat recovery efficiency is high.

The invention discloses a Carnot battery system for cascade heating of heat supply network water and an operation method of the Carnot battery system, and belongs to the technical field of Carnot battery systems, the system comprises a steam turbine power generation system, a heat supply network water heating system, an electricity-to-heat system and a storage tank heat storage and release system. Based on a traditional Carnot battery system, the heat supply network heat exchanger is additionally arranged on the heat storage part of the storage tank system, so that the thermoelectric load characteristic interval of the system is expanded, and the operation flexibility of the system is improved. And meanwhile, abandoned electricity of a new energy station can be reduced, and the network access rate of new energy is increased. In addition, the temperature of the heat storage medium entering the heat source heat exchanger is reduced by heating heat supply network water, so that the COP and the round-trip efficiency of the system are improved; the heat exchange loss of heat supply network water is reduced due to the cascade heating system, and the energy utilization rate is increased. Compared with a traditional Carnot cell system, the system has higher efficiency and lower coal consumption, and theoretical reference and technical transformation can be provided for coal-electricity low-carbon flexible transformation.

The energy storage steam system comprises a main flue, a fused salt heat exchange module and a water heat exchange module are arranged in the main flue, the fused salt heat exchange module comprises a salt heat exchanger, the salt heat exchanger is arranged in the main flue, and the water heat exchange module is arranged in the main flue. The inlet end and the outlet section of the salt heat exchanger communicate with a cold salt tank and a hot salt tank through conveying pipelines correspondingly, the water heat exchange module comprises a water quality heat exchanger, the water quality heat exchanger is arranged in a main flue, and the inlet end and the outlet section of the water quality heat exchanger are arranged in a condensation water tank and a deaerator through conveying pipelines correspondingly; the output end of the deaerator communicates with the fused salt-steam generating device, and the cold salt tank and the hot salt tank communicate with the fused salt-steam generating device. Fused salt is used as a high-temperature heat transfer and storage medium, water is used as a heat transfer and storage medium of a low-temperature area, intermittent flue gas or process gas waste heat is recycled, then the recycled heat is used for generating high-parameter steam, and the requirements for external driving, heat supply, power generation or heat supply and the like are met.

A gas and steam power generation afterburning type heat-electricity decoupling system and a working mechanism thereof, characterized in that the system comprises a gas turbine power generation system, a power transmission and transformation system, a molten salt heat storage system and a steam power generation system; the gas turbine power generation system is connected with the molten salt heat storage system through a flue gas pipeline; the molten salt heat storage system is connected with the power transmission and transformation system through a cable; the gas turbine power generation system is connected with the power transmission and transformation system through a cable; the molten salt heat storage system is connected with the steam power generation system through a main steam pipeline and a backwater pipeline; and the steam power generation system is connected with the power transmission and transformation system through a cable. The system can realize complete heat-electricity decoupling in a green energy storage system, realize the functions of self-supply of external power, storage of green electricity or heat supply, increase the accommodation capacity of a power grid to green electricity, and enhance the stability, flexibility and safety of a new power system.

The invention relates to the technical field of range hood cleaning, and discloses a steam washing device and a range hood, and the steam washing device comprises a steam generator and a water production module. The steam generator is provided with a steam cavity and a water inlet communicated with the steam cavity, and the steam generator is used for heating the cleaning medium in the steam cavity to generate steam. The water production module is connected with the steam generator, the water production module comprises a refrigeration sheet and a condensation fin, the condensation fin is connected to the refrigeration sheet, and at least part of the condensation fin extends to the water inlet. Wherein the refrigeration sheet is used for providing cooling capacity and conducting the cooling capacity to the condensation fin, and the condensation fin is used for condensing water vapor in air to form condensed water and guiding the condensed water to flow to the water inlet so as to enter the steam cavity to supplement the cleaning medium. According to the technical scheme, automatic water supplementing without a water pump and a water tank can be achieved, condensate water is formed by condensing water vapor in air to supplement the cleaning medium, and continuous operation of the steam washing function is stably guaranteed.

A system includes an exhaust diffuser system for a heat recovery steam generator (HRSG). The system includes an inlet portion, a diffuser portion axially extending from the inlet portion, and an outlet portion fluidly coupled to an axial distal end of the diffuser portion, wherein an outlet extent of the outlet portion is greater than an inlet extent of the inlet portion. The diffuser portion includes a plurality of wall portions, and the plurality of wall portions is incrementally angled relative to an axial extent extending from the inlet portion to the outlet portion. The system may further include a gas turbine engine coupled to the inlet portion and the HRSG.